shithub: scc

ref: 736b8b4e9a0173ce9a59655b3e5ae04dc1ac2700
dir: /lib/c/isdigit.c/

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#define __USE_MACROS
#include <ctype.h>
#undef isdigit

int
isdigit(int c)
{
	return (__ctype+1)[c] & (_D);
}